i only joined those sites to keep in touch with a couple friends that moved away. but, i got hooked on mafia wars on face book and now check in daily, but otherwise am inactive. who knows what the next one'll be, but as far as i can tell its all about face book now, and twitter is super popular, too. myspace has always sucked because it takes forever to load the page due to all the shit going on, songs, video, etc.more and better servers needed, then it'd be alright. i love complaining about free stuff and services.